On Sun, 17 Jan 2010 19:13:17 -0800, Josh Assing
wrote:

I have a problem, I need to replace the risers, but only one has a part # on it;
the other does not. Is there a source to help me ID the other riser part # so I
can order a replacement?
the one that does have a part# is 807988-C.


I assume we are talking about a Mercruiser Inboard/Outboard?

If so, try to locate the engine model and serial number. On recent
engines you can find it on the air cleaner/cover. Given the model
and serial number any Mercruiser parts dealer can look it up for you.